Air scoop filter assembly



May 8, 1951 E. H. BERGE 2,551,923

K AIR SCOOP FILTER ASSEMBLY Filed Oct. 14. 1949 2 Sheets-Sheet l L ATTORNEYS May 8, 1951 E. H. SERGE 2,551,923

AIR scoop FILTER ASSEMBLY Filed Oct. 14, 1949 2 Sheets-Sheet' 2 INVENTOR EDWIN H. BERGE ATT RNEYS Patented May 8, 1951 UNITED STATES PATENToFFlcE AIR SCOOP FILTER ASSEMBLY Edwin H. Berge, Milwaukee, Wis.

Application October 14, 1949, Serial No. 121,240

This invention appertains to motor vehicles, and more particularly to the body Ventilating ducts therefor.

In automobiles, it is customary to provide Ventilating ducts extending from the front thereof V(usually just in backl of the radiator or front grill) to the body for the supply of fresh air to the body. These ducts have Vincorporated therein a wire screen to prevent the entrance of insects into the body of the car, but no provision is made (as far as I am aware) for ltering the incoming air. Consequently, this incoming air is usually laden with dirt, grit, pollen,l etc.

It is, therefore, one of the primary objects of my invention to provide novel means for connection with the front of the usual ventilator duct now found on automobiles for detachably supporting a replaceable air filtering medium, whereby incoming air will be effectively cleaned before entering the Vehicle body.

Another salient object of my invention is to provide novel means for permitting the quick lter pad or medium can be conveniently and easily removed from the holder and replaced byalayman.

A still further object of the invention is to pro- Vide an air filter assembly for the ventilator ducts of automobiles, which will be durable andA efficient in use, one that will be simple and easy to manufacture and one which can be placed upon the market and associated with a ventilating duct, at a small cost.

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specifically described and claimed, and illustrated in the accompanying drawings, in which drawings,

Figure 1 is a horizontal sectional View through the front end' of an air Ventilating duct for an automobile showing my novel lter assembly incorporated therewith, the section being taken on the line I-I of Figure 2, looking in the direction of the arrows.

Figure 2 is a front elevational View showing the lter assembly connected with a Ventilating duct, parts of the View being shown broken away and in section to illustrate structural detail.

4 Claims. (Cl. 98-2) the automobile.

Figure 3 is a front elevational View illustrating a slightly modified formA of the invention for association with a certain type of Ventilating duct.

Figure 4 is a horizontal sectional View taken on the line 4--4 of Figure 3, looking in the direction of the arrows.

Figure 5 is a vertical sectional View taken on the line 5-5 Figure 3, looking in the direction of the arrows.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter D generally indicates a Ventilating duct for an automobile and the same has associated therewith the ordinary air scoop or box I0. As illustrated, the inner end of the scoop is provided with a collar II, which fricticnally engages the duct and the scoop or box can be securely fastened, such as by bolts I2, to a desired part of Rigidly fastened in the scoop I0, is a wire screen I 3. The forward end of the scoop is usually left open and the above described parts are now common in automobiles.

In accordance with my invention, I provide a novel lter assembly A for connection with the scoop I0, whereby a filtering pad can be associated with the scoop.

The ltering padk I 4 can be of any desired character, but the same is preferably of the type embodying brous material, i. e., pig hair impregnated with Neoprene, to form a mat. The filtering pad I4 can be of various shapes to ,correspond to the particular type of scoop I0, and as shown in Figures 1 and 2, the Vpad I4 is of circular shape.

The assembly A formsthe salient feature of this invention, and includes an open frame I5, of a particular shape. As illustrated, this frame I5 includes a front annular plate I6 having formed on its outer periphery a rearwardly extending flange I1, for receiving the fronty edge of the scoop. In order to obtain a close t and to eliminate rattles, an annular rubber gasket I8, or washer, can be placed against the inner face of the front plate I6 for engagement with the front edge of the scoop. Formed on the inner periphery of the front plate I6 is a rearwardly extending annular flange I9 disposed in spaced concen- 'tric relation tothe outer iangelhy The plate I6 and the anges I'I and I9 form a channel for the gasket or washer I8. Formed on the ange I 9 is an inwardly directed annular stop flange 20, the purpose of which will now appear.

The ltering pad I4 is placed directly within the inner flange I9 against the stop flange 20, and means is provided for cooperation With the frame I5 for detachably holding the pad in place. This means consists of a removable inner frame 2l, which in the present instance is also of an annular shape. The inner frame 2| includes an annular side wall 22 and an inwardly extending annular front flange 23. This frame ts within the inner flange I9 and the front flange 23 holds the pad in place. Anyfmeans can be provided for detachably holding the inner frame in position against accidental displacement and as shown, I have provided rotatable buttons 24, carried by the outer frame I5 movable into and out of engagement with the front flange 23, of the vinner frame.

One of the important features -is to provide means for quickly associating theassembly Ay with the scoop I0, and as shown, contractile coil springs 25 are carried by the flange 2l) of the outer frame and these springs 25 can be hooked lover strands of the Wire mesh I3.

Obviously, with this simple construction, the

4assembly can be instantly associated with the scoop I by a layman without the use of any tools.

The pad I4 can be instantly removed and re- Aplaced with a new pad by merely turning the buttons 24 and pulling out the pad and the inner frame 2| some makes of automobiles, the air scoop is of a square or rectangular shape and in Figures wardly extending attaching ange 29, whereby the same can be secured to an adjacent part of the automobile.

My lter -assembly 26 is shaped to `conform to the conguration of the scoop or box 28, and hence includes a front plate 30, suitably apertured at different points, as at 3I, for receiving the screws 32 utilized for connecting the ange .29 with the desired part of the automobile. Formed on the inner edge of the front plate or panel 30 is a rearwardly extending wall or ange 33, which intimately engages the inner faces of the walls of the box or scoop 28, at the front thereof. The inneredge of the Walls 33 have formed thereon an inwardly directed stop flange 34 for a lter pad 35. The lter pad is shaped to conform to the configuration of the box and for .snugly fitting within the wall 33 against the flange 34. The inner frame 36 is detachably fitted within -the Wall 33, and includes a iront open frame plate 31 and a rearwardly directed ilange 38 which engages the wall 33. 'I'l'ie'plate 31 engages the margin of the filter pad and .detachably holds the same in place. Rotatable buttons 39 can be uti-- lized for detachably holding the inner frame in position against accidental displacement.

From the foregoing description, it 4can be seen that I have provided an exceptionally simple .assembly for holding replaceable filter pads on 1. In an air Ventilating system for automobiles, an air duct, an air scoop having a front open end associated with the duct, and an air lter assembly for the front of the scoop comprising an outer frame fitted in the scoop having a front wall, an inner side ange and an inwardly directed stop flange on the side flange, securing means connecting the outer frame to the scoop, a lter pad fitted in the outer frame against said stop ilange, .a removable inner frame engaging the side flange and having an outer flange engaging the lter pad, and means detachably holding the inner frame against accidental displacement.

2. In an air Ventilating apparatus for automobiles, an air duct, an air scoop carried by the -forward end of the duct having an open front f end, and an air nlter assembly for the front end of said scoop comprising an outer frame having fa front plate and rearwardly directed spaced inner and outer flanges forming a channel for receiving the front edge of the scoop, an inwardly directed stop flange on the inner ange, securing means connecting the outer frame to the scoop, a replaceable iilter pad fitted in the outer frame, against said stop flange, a removable inner frame .tted in the inner flange against the said stop flange and having a front flange engaging the lter pad, and means detachably securing the inner frame in place against accidental movement.

3. In a Ventilating system for automobiles, an air duct, an air scoop for the front end of said duct, a wire screen rigidly secured in the scoop, and a filter assembly for the front of the air scoop, including an outer open frame having a front Wall, .a rearwardly directed side wall and an inner stop flange, contractile coil springs carried by the stop flange engaging the screen for holding the front wall against the front edge of the scoop, a replaceable filter pad tted in the outer frame against the stop flange, and a removable inner frame tted in the outer frame for holding the lter pad in place.

4. An air filter assembly for detachable connection with the air scoop of an air Ventilating system for automobiles comprising an outer frame including a front wall, an inwardly directed side wall and a stop flange on said side Wall, securing means connecting the outer frame to the air scoop, a replaceable filter pad tted in said outer frame against the stop flange, an inner frame for removably holding the pad in place including a side wall engaging the side wall of the outer frame and an inwardly directed pad engaging flange, and means for detachably holding the inner frame in place against accidental movement.

EDWIN H. BERGE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

